<!DOCTYPE html>
<html lang="zh-CN">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>016-HTML5-MathML-第三方库</title>
    <script type="text/javascript" src="https://static.runoob.com/assets/js/mathml/mspace.js"></script>
</head>

<body>
    <math xmlns="http://www.w3.org/1998/Math/MathML">

        <mrow>
            <msup>
                <mi>a</mi>
                <mn>2</mn>
            </msup>
            <mo>+</mo>

            <msup>
                <mi>b</mi>
                <mn>2</mn>
            </msup>
            <mo>=</mo>

            <msup>
                <mi>c</mi>
                <mn>2</mn>
            </msup>
        </mrow>

    </math>

</body>

</html>